Increasing Tool Steel Surface Wear Resistance by Surface Treatment

Tóth, László; Nyikes, Zoltán; Mhatre, Umesh

doi:10.33894/mtk-2020.13.32

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…They found that the wear rate of materials is directly proportional to the load and inversely proportional to the hardness [ 21 ]. Based on these research results, the composite inoculant not only increases the content of carbides in HSS but also improves the hardness and wear resistance of HSS, which is consistent with the experimental results of Sexton et al During the friction and wear tests, the contact area between the test steel and wear ring increased, forming numerous dislocations and particle phases on the worn surface [ 22 , 23 , 24 ], which increased the hardness of the modified steel. The improvement in HSS red hardness resulting from modification was related to the content of carbides, with the ceramic particles coated with graphene in the composite inoculant increasing the content of alloying compounds in HSS.…”

Section: Resultssupporting

confidence: 88%

Effect of In Situ NbC-Cr7C3@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel

Bai,

Zheng,

Zhang

et al. 2024

Materials

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A novel graphene-coated nanocrystalline ceramic particle, iron-based composite inoculant was developed in this study to optimize the as-cast microstructure and mechanical properties of W18Cr4V high-speed steel (HSS). The effects of the composite inoculant on the microstructure, crystal structure, and mechanical properties of HSS were analyzed using transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The (002-) and (020) crystal planes of the Fe3C and Cr7C3 phases, respectively, were collinear at two points in the reciprocal space, indicating a coherent relationship between the Fe3C and Cr7C3 phases in the tempered modified HSS. This contributed to an improved non-uniform nucleation rate and refining of the HSS grains. The mechanical properties of the modified steel exhibited a general improvement. Specifically, the modification treatment enhanced the hardness of HSS from HRC 63.2 to 66.4 and the impact toughness by 48.3%.

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Section: Resultssupporting

confidence: 88%

Effect of In Situ NbC-Cr7C3@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel

Bai,

Zheng,

Zhang

et al. 2024

Materials

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“…Sulfocyanidations and sulfonitrocarburizing, as the final operations of the thermochemical processing of tools, can be performed in liquid, gaseous, or powdered solid media [1][2][3][20][21][22]. Nitridability, as Toth et al state in their review [20], depends directly on the alloying elements. However, the nitriding temperature must be lower than the specific tempering temperature of the steel, so that the core is not affected.…”

Section: Introductionmentioning

confidence: 99%

Sulfonitrocarburizing of High-Speed Steel Cutting Tools: Kinetics and Performances

et al. 2021

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The scholarly literature records information related to the performance increase of the cutting tools covered by the superficial layers formed “in situ” when applying thermochemical processing. In this context, information is frequently reported on the carbamide role in processes aiming carbon and nitrogen surface saturation. Sulfur, together with these elements adsorbed and diffused in the cutting tools superficial layers, undoubtedly ensures an increase of their operating sustainability. The present paper discusses the process of sulfonitrocarburizing in pulverulent solid media of high-speed tools steel (AISI T1, HS18-0-1) and its consequences. The peculiarity of the considered process is that the source of nitrogen and carbon is mainly carbamide (CON2H4), which is found in solid powdery mixtures together with components that do not lead to cyan complex formation (non-toxic media), and the sulfur source is native sulfur. The kinetics of the sulfonitrocarburizing process, depending on the carbamide proportion in the powdered solid mixture and the processing temperature, was studied. The consequences of the achieved sulfonitrocarburized layers on the cutting tools’ performance are expressed by the maximum permissible cutting speed and the maximum cut length. An interesting aspect is highlighted, namely the possibility of using chemically active mixtures. Their components, by initiation of the metallothermic reduction reaction, become able to provide both elements of interest and the amount of heat needed for the ultrafast saturation of the targeted metal surfaces.

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Effect of the Different Speed Compression on the Mechanical Behaviour of Aluminium Foam

Kertész¹,

Kovács²,

File³

et al. 2022

EJMSE

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The research is focusing on the improvement of vehicle impact safety considering the mass optimization problem. The application of aluminium foam in the vehicle industry is not a novelty. The crumple parts integrated with metal foam can be one of the better solutions to improve the impact energy-absorbing capacity of the vehicles. However, it is very important that the absorber can hold the mechanical behaviour under low and high-speed impact loads. The present study represents the mechanical behaviour and energy-absorbing efficiency of closed-cell aluminium foam investigated by different compression speeds. The investigation reveals the nexus of the impact speed and the amount of absorbed energy by the foam.

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Increasing Tool Steel Surface Wear Resistance by Surface Treatment

Cited by 3 publications

References 9 publications

Effect of In Situ NbC-Cr7C3@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel

Effect of In Situ NbC-Cr7C3@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel

Sulfonitrocarburizing of High-Speed Steel Cutting Tools: Kinetics and Performances

Effect of the Different Speed Compression on the Mechanical Behaviour of Aluminium Foam

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